Azeotropic compositions comprising fluorinated compounds for cleaning applications
View Patent ↗The present invention relates to compositions comprising fluorinated olefins or fluorinated ketones, and at least one alcohol, halocarbon, hydrofluorocarbon, or fluoroether and combinations thereof. In one embodiment, these compositions are azeotropic or azeotrope-like. In another embodiment, these compositions are useful in cleaning applications as a degreasing agent or defluxing agent for removing oils and/or other residues from a surface.
1. An azeotropic or azeotrope-like composition comprising:
about 86 to about 99 weight percent F13E and about 14 to about 1 weight percent isopropanol.
2. An azeotropic or azeotrope-like composition as in claim 1 , wherein the composition comprises:
96.9 weight percent F13E and 3.1 weight percent isopropanol having a vapor pressure of about 14.7 psia (101kPa) at a temperature of about 51.9 °C.
3. A process for cleaning, comprising:
a. contacting a surface comprising a residue with the composition of claim 1 and
b. recovering the surface from the composition.
4. The composition of claim 1 further comprising an aerosol propellant.
5. The composition of claim 4 wherein the aerosol propellant is selected from the group consisting of air, nitrogen, carbon dioxide, difluoromethane, trifluoromethane, difluoroethane, trifluoroethane, tetrafluoroethane, pentafluoroethane, heptafluoropropane, and pentafluoropropane.
6. The process of claim 3 wherein said residue comprises an oil.
7. The process of claim 3 wherein said residue comprises a rosin flux.
8. The process of claim 3 wherein said surface is an integrated circuit device.